Bulk Viscous Cosmological Models in Barber’s Second Self Creation Theory

Several modification of Einstein’s general relativity have been proposed and extensively studied so far by many cosmologists to unify gravitation and many other effects in the universe. Barber 1 has produced two continuous self-creation theories by modifying the Brans-Dicke theory and general relativity. The modified theories create the universe out of self-contained gravitational and matter fields. Brans-Dicke 2 theory develops Mach’s principle in a relativistic framework by assuming interaction of inertial masses of fundamental particles with some cosmic scalar field coupled with the large scale distribution of matter in motion. However, Barber 1 has included continuous creation of matter in these theories. The universe is seen to be created out of self-contained gravitational, scalar and matter fields. However, the solution of the one-body problems reveal unsatisfactory characteristics of the first theory and in particular the principle of equivalence is severely violated. The second theory retains the attractive features of the first theory and overcomes previous objections. These modified theories create the universe out of self-contained gravitational and matter fields. Recently, Brans 3 has also pointed out that Barber’s first theory is in disagreement with experiment as well as inconsistent, in general, since the equivalence principle is violated. Barber’s second theory is a modification of general relativity to a variable G-theory. The second is an adaptation of general relativity to include continuous